Duerkopp Adler 558 Service Instructions Manual page 45

9
–
Turn the machine with the hand crank until just before the seam
end.
Turn farther until the upper thread knife begins with the cutting
movement to the right.
–
Loosen nut 6.
–
Set turn-off lever 8 so that the roller center is exactly under the tip
7 of the curve plate 4. See illus.: a .
–
Tighten nut 6 again.
ATTENTION !
When loosening and adjusting the roller bolt secure against turning
with a wrench.
The pre-tensioning of the torque rod 3 for the bent lever 1 must be
retained.
–
Turn the machine farther with the hand crank until knife edge 10
and needle plate edge 9 are flush.
–
Loosen screws 2 on the curve plate 4.
–
Press lever 1 down until the main tension opens 0.3 mm.
–
In this held position press curve plate 4 down onto roller 5.
–
Tighten screws 2 again.
–
Turn the machine with the hand crank until just before the seam
end.
The turn-off lever 8 should show a slight forward motion.
–
Turn the handwheel until it catches completely.
Play must be felt between curve plate 4 and roller 5.
If no play is felt, then the settings described on this page must be
repeated !
–
Turn the hand crank farther until knife edge 10 and needle plate
edge 9 are flush.
Check if the main tension is open 0.3 mm.
10
1
2
3
4
5
6
7 8
a
45